Wiper Skeleton Assembly With Anti-Loosening Fastener Lock
Solution Overview
Problem
Existing skeleton wipers suffer from loosening of connections due to vibration, collision, or prolonged use, affecting durability and safety.
Innovation Solution
A wiper skeleton assembly with stopping blocks on wing strips and fasteners that prevent loosening by blocking the fasteners' rotation through intersecting and staggered arrangements, using pivot portions and through slots to stabilize the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the connection between main frame and medium frame or between medium frame and wing strip is connected by pivoting via shaft or buckling via fastener, then the linkage capability is achieved, but the connection loosens due to vibration, collision, or prolonged use
Solution Approach 1:
The stopping block is pre-positioned on the wing strip before assembly, and the fastener is designed with a blocking portion that will engage with the stopping block upon assembly. This preliminary arrangement ensures that when the fastener is installed, the blocking portion automatically engages with the stopping block to prevent loosening, without requiring additional adjustment or assembly steps
Solution Approach 2:
The stopping block serves as an intermediary element between the wing strip and the fastener's blocking portion. It acts as a mechanical stop that transfers the preventing force from the blocking portion to the wing strip, effectively mediating the anti-loosening function and distributing the mechanical stress
2Reliability
If the fastener is designed with blocking portion and upper cover, then the anti-loosening function is improved, but the device complexity increases
Solution Approach 1:
The fastener integrates multiple functions into a single component: the main body provides fastening, the blocking portion provides anti-loosening, and the upper cover provides protection and additional locking. These elements are merged into one integrated fastener assembly rather than separate components, reducing overall system complexity while maintaining functionality
Solution Approach 2:
The fastener is designed as a multi-functional component that simultaneously performs fastening, anti-loosening, and protective functions. The blocking portion serves both as a mechanical stop and as part of the locking mechanism, while the upper cover provides both protection and additional anchoring, making the single fastener component universally functional
Data Source
AI summary
A wiper skeleton assembly includes a medium frame, a main frame, two wing strips, and two fasteners. The medium frame has two first though slots and pivoted on the main frame. The wing strips are corresponding to the first though slots and respectively has a second through slot and a stopping block. The fasteners are corresponding to the wing strips and respectively has a main body, an upper cover, and a blocking portion. The upper cover and the blocking portion are connected to two ends of the main body. When the wiper skeleton assembly is locked, the main bodies penetrate the first and second through slots, the blocking portions and the upper covers are abutted to opposite sides of the wing strips and the medium frame, the stopping blocks are configured to block the blocking portions to prevent the fasteners loosened from the medium frame and the wing strip.